Re: [Dev-luatex] .BEILMOPS or how I stopped worrying and love Open Source

13 Dec 2007

      On Thu, Dec 13, 2007 at 06:18:24PM +0100, David Kastrup wrote:
...
Heiko Oberdiek  writes:
...
On Thu, Dec 13, 2007 at 02:40:07PM +0100, Taco Hoekwater wrote:
...
General remark: suck attempts to squeeze tex input to behave
like lua source code are hard to debug and even harder to
predict. It is much less confusing if you create either an
environment like
\startluacode
   ..
   \stopluacode
with appropriate catcode changes,
And \endlinechar=10 \catcode10=12 to enable the Lua parser
seeing multiple lines instead of one merged huge line.
What's the beef with that?  Except inside of strings (where \n will work
fine), the Lua parser does not consider line endings to be different
from spaces.
\catcode`\{=1
\catcode`\}=2
\directlua0{
  do
    local foo
    error("Error in third line")
  end
}
\endlinechar=10 %
\directlua0{%
  do
    local foo
    error("Same line, but useful line number")
  end
}%
\endlinechar=13 %
\end

luatex --ini test
This is LuaTeX, Version snapshot-0.20.0-2007120612 (Web2C 7.5.6) (INITEX)
(test.tex
! LuaTeX error [string "luas[0]"]:1: Error in third line.
l.8 }

? 
! LuaTeX error [string "luas[0]"]:3: Same line, but useful line number.
l.15 }
      %
? 
 )
No pages of output.
Transcript written on test.log.

Yours sincerely
  Heiko 